11191258666 has 24 divisors (see below), whose sum is σ = 20555376480. Its totient is φ = 4543818552.

The previous prime is 11191258657. The next prime is 11191258739. The reversal of 11191258666 is 66685219111.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3003310 + ... + 3007033.

It is an arithmetic number, because the mean of its divisors is an integer number (856474020).

Almost surely, 2^11191258666 is an apocalyptic number.

11191258666 is a deficient number, since it is larger than the sum of its proper divisors (9364117814).

11191258666 is a wasteful number, since it uses less digits than its factorization.

11191258666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6010378 (or 6010371 counting only the distinct ones).

The product of its digits is 155520, while the sum is 46.

The spelling of 11191258666 in words is "eleven billion, one hundred ninety-one million, two hundred fifty-eight thousand, six hundred sixty-six".